CN202510616U

CN202510616U - Vibration damping device of magnetorheological elastomeric bearing

Info

Publication number: CN202510616U
Application number: CN2012201220753U
Authority: CN
Inventors: 谭和平; 谢宁; 刘强; 谭晓婧
Original assignee: 谢宁
Priority date: 2012-03-28
Filing date: 2012-03-28
Publication date: 2012-10-31
Anticipated expiration: 2022-03-28

Abstract

The utility model discloses a vibration damping device of a magnetorheological elastomeric bearing. The vibration damping device of the magnetorheological elastomeric bearing consists of a magnetic ring, a magnetorheological elastomer and an electromagnet. The electromagnet is circular. At least three pairs of magnetic poles are uniformly distributed on the inner circumference of the electromagnet. The magnetic ring consists of a high magnetic material. A layer of the magnetorheological elastomer is fixed on the outer circumference of the magnetic ring. The electromagnet is fixed on the outer circumference of the magnetorheological elastomer.

Description

Magnetic rheology elastic body bearing vibration damping equipment

Technical field

The utility model relates to a kind of bearing vibration damping equipment, is specifically related to magnetic rheology elastic body bearing vibration damping equipment.

Background technique

Rotatablely move and to produce vibration; When this vibration that is produced by rotary load is delivered on the bearing through rotating shaft, produced radial vibration with regard to making the bearing that carries rotary load, what the amplitude of this radial vibration and frequency also can be because of the torque of rotary load or rotating speeds is different; This radial vibration leads to a disaster as not suppressing to cause the destruction of bearing; Therefore, people attach great importance to for the vibration damping of bearing, except bearing is adopted the high-precision processing; Also adopt steel and high polymer composite material sandwich structure to carry out vibration damping as the methods such as outer ring of bearing; Though these vibration reducing measures have certain effect to the vibration damping and the noise reduction of bearing, because this type vibration reducing measure is in case after accomplishing, the damping property of bearing also is fixed; Because rotary load can produce different amplitudes and different frequency under different rotating speed and torque condition vibration adopts existing bearing vibration reducing measure then to be difficult to adjust according to the different rotating speeds of rotary load in good time.

Summary of the invention

The purpose of the utility model is to propose a kind of magnetic rheology elastic body bearing vibration damping equipment to the deficiency of existing bearing damping technology existence, and this device can come its damping property of timely adjustment through the size of regulating electromagnetic field intensity.

The technological scheme of the utility model is following:

A kind of magnetic rheology elastic body bearing vibration damping equipment; It is made up of magnetic guiding loop, magnetic rheology elastic body and electromagnet, and wherein: the structure of electromagnet is a ring, on the inner circumference of electromagnet, is evenly equipped with at least three pairs of magnetic poles; Magnetic guiding loop is made up of high permeability material; On the outer peripheral surface of magnetic guiding loop, fixed one deck magnetic rheology elastic body, electromagnet is fixed on the excircle of magnetic rheology elastic body, and the width of magnetic rheology elastic body is not less than the thickness of electromagnet on magnetic guiding loop and the magnetic guiding loop outer peripheral surface.

The function of the utility model be achieved in that the magnetic rheology elastic body bearing vibration damping equipment of the utility model be with the Bearing Installation that needs vibration damping in magnetic guiding loop; Fixed one deck magnetic rheology elastic body on the outer peripheral surface because of magnetic guiding loop; And on the excircle of this one deck magnetic rheology elastic body, fixed the electromagnet that has three pairs of magnetic poles at least; Like this; In case after the electromagnet energising; The magnetic line of force that each magnetic pole of electromagnet produces will form closed magnetic circuit through magnetic rheology elastic body and the magnetic guiding loop of each pole bore of electromagnet on week; The direction of the magnetic line of force that produces because of each magnetic pole of electromagnet is for radially, and this magnetic line of force can make the ferromagnetic particle in the magnetic rheology elastic body on the magnetic guiding loop excircle form chain or column aggregated structure and make its hardness increase on this direction in magnetic line of force direction (promptly radially), therefore; Electromagnetic field intensity through each magnetic pole of adjustment electromagnet can be adjusted the hardness level that is in the magnetic rheology elastic body between magnetic guiding loop outer peripheral surface and each magnetic pole strength of electromagnet, thereby the vibration that bearing is produced on all directions radially suppresses.

Compare with existing bearing vibration damping mode; Because of the damping property of magnetic rheology elastic body bearing vibration damping equipment can be regulated through the intensity size of adjustment electromagnetic field; Therefore, magnetic rheology elastic body bearing vibration damping equipment not only can provide fixing damping property, but also can suitable damping property be provided according to the rotary load different operation states; Therefore, magnetic rheology elastic body bearing vibration damping equipment can carry out intelligent vibration damping to operating rotary load.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model.

Fig. 2 is the sectional view of Fig. 1.

Fig. 3 is the schematic representation of the field coil wiring of electromagnet in the utility model.

Dotted line among Fig. 4 is the magnetic circuit schematic representation that the electromagnetic field of the utility model field coil energising back electromagnet generation forms.

Fig. 5 is the utility model when work, and bearing is installed the schematic representation of distribution with vibration transducer.

Fig. 6 is the sectional view of Fig. 5.

Fig. 7 is the schematic representation of vibration transducer and field coil wiring among Fig. 5

Work schematic representation when Fig. 8 is the utility model driven rotary load.

Embodiment

Specify the structure of the utility model below in conjunction with accompanying drawing:

Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4; This is a kind of concrete structure of the utility model; A kind of magnetic rheology elastic body bearing vibration damping equipment 1 is made up of magnetic guiding loop 5, magnetic rheology elastic body 4 and electromagnet 2, and wherein: the structure of electromagnet 2 is a ring; On the inner circumference of electromagnet 2, be evenly equipped with four pairs of magnetic poles (that is: eight magnetic poles); Magnetic guiding loop 5 is made up of high permeability material, on the outer peripheral surface of magnetic guiding loop 5, has fixed one deck magnetic rheology elastic body 4, and electromagnet 2 is fixed on the excircle of magnetic rheology elastic body 4; On each magnetic pole of electromagnet 2, all be wound with field coil 3; Between each magnetic pole of electromagnet 2 and the gap of each magnetic pole excitation coil 3 be filled with non-magnetic insulating material 14, each field coil 3 is connected (seeing Fig. 3 for details) through lighting outlet with controller 6, and the width of magnetic rheology elastic body 4 is identical with the thickness of electromagnet 2 on magnetic guiding loop 5 and magnetic guiding loop 5 outer peripheral surfaces; When controller 6 during to each field coil 3 output currents of electromagnet 2 each magnetic pole; The magnetic line of force that electromagnet 2 each magnetic pole produce will form closed magnetic circuit (seeing Fig. 4 for details) through the magnetic rheology elastic body 4 of electromagnet 2 each pole bore on week and magnetic guiding loop 5; The magnetic line of force direction that produces because of each magnetic pole of electromagnet 2 is for radially; This magnetic line of force can make the ferromagnetic particle in the magnetic rheology elastic body 4 on magnetic guiding loop 5 outer peripheral surfaces form chain or column aggregated structure and its hardness on this direction is increased in magnetic line of force direction (promptly radially); Therefore, the hardness level that can adjust on the magnetic rheology elastic body 4 that is between magnetic guiding loop 5 outer peripheral surfaces and electromagnet 2 each magnetic pole strength through the electromagnetic field intensity of adjustment electromagnet 2 each magnetic pole is carried out vibration suppression.

Combine Fig. 5, Fig. 6, Fig. 7 and Fig. 8 to come should being used as of a kind of magnetic rheology elastic body bearing vibration damping equipment 1 of the utility model further described now: will need the bearing 9 of vibration damping to be installed in the magnetic guiding loop 5; The corresponding electromagnet of toroidal surface 2 each magnetic pole place at magnetic guiding loop 5 are equipped with vibration transducer 7 (seeing Fig. 5 and Fig. 6 for details); Each vibration transducer 7 is connected (see Fig. 7) through lighting outlet with controller 6 with field coil 3; Prime mover 11 is connected with rotary load 8 through shaft joint 10; The axle at rotary load 8 two ends is installed on magnetic rheology elastic body bearing

vibration damping equipment

12 and 13 through bearing 9, and each vibration transducer 7 is connected (see Fig. 8) through lighting outlet with controller 6 with field coil 3 on the magnetic rheology elastic body bearing

vibration damping equipment

12 and 13; The vibration that when 8 rotations of prime mover 11 driven rotary load, produces makes bearing 9 produce radial vibration; Controller 6 is through the vibration transducer 7 of magnetic guiding loop 5 toroidal surfaces on bearing 9 excircles; After measuring the direction and amplitude of bearing 9 radial vibrations; Adjustment in good time gets into the size of current of electromagnet 2 each magnetic pole excitation coil 3, and the hardness that is in the magnetic rheology elastic body 4 between magnetic guiding loop 5 outer peripheral surfaces and electromagnet 2 each magnetic pole strength is changed, and the vibration that rotary load 8 is produced is inhibited.

Claims

1. magnetic rheology elastic body bearing vibration damping equipment, it comprises magnetic guiding loop, magnetic rheology elastic body and electromagnet, it is characterized in that: the structure of said electromagnet is a ring, on the inner circumference of electromagnet, is evenly equipped with at least three pairs of magnetic poles; Said magnetic guiding loop is made up of high permeability material, on the outer peripheral surface of magnetic guiding loop, has fixed one deck magnetic rheology elastic body; Said electromagnet is fixed on the excircle of magnetic rheology elastic body.

2. a kind of magnetic rheology elastic body bearing vibration damping equipment as claimed in claim 1, it is characterized in that: the width of magnetic rheology elastic body is not less than the thickness of electromagnet on said magnetic guiding loop and the magnetic guiding loop outer peripheral surface.